Golden Gate Park's historic collection of plants.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Leaf through over 30,000 artists' sketchbooks in what may be the world's largest collection of doodles

Sniff the Titan Arum's rotting flesh.

Macabre astrological automaton clock dating to the late 1400s.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

The oldest monument in Marrakesh and the city's only surviving example of Almoravid architecture.

Traditional 11th-century outdoor tannery.

The largest madrasa in Morocco once housed more than 900 students within its exquisite walls.

Fortune tellers, snake charmers, poets, and storytellers all gather on this historic square in Morocco.

This open-air heritage museum illuminates centuries of historic English life from a West Sussex village.

This giant geoglyph of mysterious origins is now the site of neo-pagan rituals.

This breathtakingly beautiful botanical garden is home to a mob of wonderful wallabies.

England's most notorious suicide spot.

These stark white cliffs were spat up by the sea and are slowly being retaken by it.

This tiny 1930s Art Deco airport is a beautiful remnant of a bygone era.

A motley, fantastical agglomeration of unlikely houseboats along the Shoreham-by-Sea riverbank.

The rotting skeleton of a shoreside fun fair that was destroyed by fire and storms still haunts the Brighton ocean view.

Both church and state get put to the torch in this annual festival in the "Bonfire Capital of the World."

World Trade Center memorial likened to a woman's sexual organ.

On the Hudson resides one of the largest clocks in the world.

A giant light 13 feet high shines near Thomas Edison's old Menlo Park lab.